SEVEN: Human Population Reaches a Milestone
Despite a general decline in birth rates, world population increases by some 83 million people each year. This growth will continue for decades to come, challenging our ability to feed ourselves and to sustain the natural capital on which human societies depend. The...Podcast: More Accurate Elevations from GPS
We discovered a fascinating podcast with NOAA Chief Geodesist Dru Smith, learning how scientists are using measurements of gravity to refine a complex mathematical model of the Earth’s shape, known as the geoid. Once the new model is deployed, the hope is that we’ll...Texas Drought Visible in New National Groundwater Maps
ScienceDaily (Nov. 30, 2011) — The record-breaking drought in Texas that has fueled wildfires, decimated crops and forced cattle sales has also reduced levels of groundwater in much of the state to the lowest levels seen in more than 60 years, according to new...Apps We Love: 3D Sun
No seasonal affective disorder for us! Now you can carry your own personal sun with you on your iPhone, iPod or iPad with our featured app this week, 3D Sun! If a major solar flare erupts on the sun, your phone chirps in your pocket to let you know! Pulling out your...